GEOM 1| Lesson 4 | Try This! (Classifying Triangles)

 

Try This!

Next, using the DESMOS program create 3 triangles using the following criteria:

1) All 3 sides are the same length.

2) 2 of the sides are the same length.

3) All 3 sides are different lengths.

What are the names of these three types of triangles?

How are the sides and types of angles related in each triangle?

What can you say about the angles in a triangle in relation to the side opposite each angle?  Take a moment to explore your results using GeoGebra.

Summarize how to classify triangles by side length and angle measure by creating a triangle for each box in the chart below.  Make sure to indicate angle measures and side lengths.

 

Scalene

 

Isosceles

 

Equilateral

Acute  

 

 

Right  

 

 

 

 

Obtuse  

 

 

 


Go to Watch (Triangle Sum Theorem)